CN104232903B - A kind of for reclaiming equipment and the recovery method thereof of the surperficial zerovalent copper of gantry hanger - Google Patents
A kind of for reclaiming equipment and the recovery method thereof of the surperficial zerovalent copper of gantry hanger Download PDFInfo
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- CN104232903B CN104232903B CN201410467450.1A CN201410467450A CN104232903B CN 104232903 B CN104232903 B CN 104232903B CN 201410467450 A CN201410467450 A CN 201410467450A CN 104232903 B CN104232903 B CN 104232903B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses a kind ofly for reclaiming equipment and the recovery method thereof of the surperficial zerovalent copper of gantry hanger, this equipment comprises the annular chain type travelling facility that can fix gantry hanger. This recovery method comprises: choose bacterial classification and tame cultivation; Gantry hanger is fixed on annular chain type travelling facility, and preparation 9K culture medium injects the set leaching tanks in this equipment bottom, and gantry hanger is immersed in wherein; Continue aeration to leaching tanks bottom, extraction time is 4 ~ 6 days; Collect leachate and filter, by gained filtrate extract successively, reextraction and electrolysis, obtain metallic copper. Provided by the invention for reclaiming equipment and the recovery method thereof of the surperficial zerovalent copper of gantry hanger, produce without waste water and waste gas, realize recycling of solution, equipment energy consumption is low, floor space is little, and gantry hanger fully contacts with solution, forms stirring system when the aeration of leaching tanks bottom, operation is efficient, and the copper purity of acquisition is high.
Description
Technical field
The present invention relates to method and reclaimer thereof that a kind of solid waste resource recovery and non-ferrous metal reclaim, particularly, relate to a kind of for the recovery method of the surperficial zerovalent copper of gantry hanger and the chain-type travelling facility of use thereof.
Background technology
Wiring board is the basis of electronics industry, is the core of each electronic product, and along with China's electric equipment products constantly update, China also sharply increases the demand of wiring board. The output of China's wiring board in 2006 is 1.3 hundred million square metres, ranks first in the world, and the output of China's wiring board in 2012 and sales volume have accounted for 40% of global total output, and future will approach 45% ~ 50% of the whole world in 3 or five years. China need to produce a large amount of wiring boards every year, and in wiring board production process, gantry hanger is for fixed line base board.
Gantry hanger as shown in Figure 1. Knob a is used for regulating gantry hanger width, hanger upper end, the fixing gantry of knob b, wiring board substrate is fixed between hanger part c and hanger surface d by knob e, and wiring board substrate is by the copper-plated while, and gantry hanger surface d and hanger part c surface are all inevitably coated with metallic copper. To the recovery of gantry hanger surface copper, not only can realize the recycling of resource, also can reduce the consumption copper cost of enterprise simultaneously, there is very important value and significance.
At present, some enterprises adopt the zerovalent copper that adheres on sulfuric acid and hydrogen peroxide reagent leaching hanger surface, gantry, and copper oxidation dissolution is copper sulphate the most at last. This kind of technology sulfuric acid used easily produces sulfuric acid mist and steam, stimulate human organ and skin, and pickle liquor is difficult, can cause serious harm to human body and environment. In addition, the easy etching apparatus of acid effect, and the waste liquid producing need to carry out subsequent treatment and could discharge, and enterprise's production and economic benefit are had a negative impact.
Summary of the invention
The object of this invention is to provide a kind of for reclaiming the method and apparatus of hanger surface, gantry zerovalent copper, the method leaching liquid used can not produce harm to human body, and leaching liquid recycles, non-wastewater discharge, device therefor is according to gantry hanger characteristics design, can efficiently move, improve the leaching rate of copper.
In order to achieve the above object, the invention provides a kind ofly for reclaiming the equipment of the surperficial zerovalent copper of gantry hanger, wherein, described equipment comprises the annular chain type travelling facility that can fix gantry hanger. Described annular chain type travelling facility comprises leaching tanks, ring chain track, suspension holdfast, suspension chain, pillar and body frame; Described leaching tanks are cannelure, and the outer wall in its outside and the inwall of inner side are concentric cylindrical, and the cross section of these leaching tanks is " recessed " shape, and described gantry hanger is suspended between the described outer wall and described inwall of leaching tanks; Distance between described outer wall and the described inwall of leaching tanks is greater than the distance between the dual-side of gantry hanger; Described ring chain track becomes concentrically ringed chain track to form by two, and it is arranged on the top of leaching tanks, and the radius of these two chain tracks is suitable with outer wall and the inwall of leaching tanks respectively; Between two described chain tracks, be provided with some shaft-like suspension holdfasts along concentrically ringed radial direction; Each suspension holdfast below is respectively equipped with two suspension chains, and the end of every suspension chain is respectively equipped with a knot that can be undone by a pull, and described knot that can be undone by a pull can be connected and fixed with the side top of gantry hanger; The inner side of described ring chain track is outwards provided with some shaft-like body frames by concentrically ringed circle centre position, and the end of each body frame is fixed with ring chain track respectively, is respectively equipped with a pillar on each body frame.
Above-mentioned for reclaiming the equipment of the surperficial zerovalent copper of gantry hanger, wherein, the top of two sides of described gantry hanger is respectively equipped with a sealing ring, and described sealing ring can be connected and fixed with the described knot that can be undone by a pull of the end of described suspension chain.
Above-mentioned for reclaiming the equipment of the surperficial zerovalent copper of gantry hanger, wherein, described annular chain type travelling facility can be connected with drive unit, drives each suspension holdfast to drive gantry hanger under it to continue pitch of the laps operation with ring chain track with the speed of 3 ~ 4 circle/min.
Above-mentioned for reclaiming the equipment of the surperficial zerovalent copper of gantry hanger, wherein, described equipment also comprises the liquid storage tank that can filter, can be used in the mixer-settler and the raffinate storage pool that can be used in the raffinate storage after extraction of extraction, can be used in the back extraction pond of reextraction, and can be used in the electrolytic cell of electrolysis.
The present invention also provides a kind of method that uses the said equipment to reclaim surperficial zerovalent copper in the hanger of gantry, and wherein, the method is to leach gantry hanger surface copper by microorganism, and described method comprises: step 1, and choose bacterial classification and tame cultivation; Step 2, is fixed on gantry hanger on described annular chain type travelling facility, and preparation 9K culture medium also injects described leaching tanks, and described gantry hanger is immersed in the 9K culture medium of described leaching tanks; Step 3, the initial pH value of the 9K culture medium in leaching tanks is adjusted into 1.8 ~ 2.5 with sulfuric acid, cultivate the bacterial classification of gained to 9K inoculation of medium step 1 domestication in leaching tanks by inoculum concentration 10%, under 26 ~ 30 DEG C of conditions of normal temperature, continue aeration to described leaching tanks bottom and form stirring, the surface copper of gantry hanger is leached, extraction time is 4 ~ 6 days simultaneously; Step 4, after leaching process completes, collects leachate (claiming again leaching liquid) and filters, and obtains filtrate (supernatant); Preferably adopt self priming pump that leachate is moved into liquid storage tank, filter. Step 5, by gained filtrate extract successively, reextraction and electrolysis, obtain metallic copper, its purity can be up to 99%.
The method of surperficial zerovalent copper in above-mentioned recovery gantry hanger, wherein, the bacterial classification described in step 1 is Thiobacillus ferrooxidans, tames cultivation by 9K culture medium.
The method of surperficial zerovalent copper in above-mentioned recovery gantry hanger, wherein, described domestication is cultivated, and its process comprises: with 10% inoculum concentration, described bacterial classification is seeded to 9K culture medium, shaken cultivation under room temperature condition, 200r/min; At it during in exponential phase, add the accessory of gantry hanger, measure the pH value of leachate, after pH starts to decline and tends to stablize, the leachate that again measures gained with 10% inoculation is seeded to new 9K culture medium and adds the accessory of two gantry hangers; Repeat the number of fitting parts that this process also improves gantry hanger successively one by one, finally obtain required domesticated strain, preserve stand-by.
The method of surperficial zerovalent copper in above-mentioned recovery gantry hanger, wherein, the FeSO that comprises 10 ~ 40g/L in described 9K culture medium4·7H2(the NH of O, 0.75 ~ 3g/L4)2SO4, 0.125 ~ 0.5g/L K2HPO4, the KCl of 0.025 ~ 0.1g/L, the MgSO of 0.125 ~ 0.5g/L4·7H2Ca (the NO of O, 0.0025 ~ 0.01g/L3)2, and deionized water.
The method of surperficial zerovalent copper in above-mentioned recovery gantry hanger, wherein, filtrate described in step 5 preferably enters in mixer-settler and extracts, while using extractant to extract to it, extraction phase is than the volume ratio of O/A(organic phase and water) be 1:1, stratification after extraction, make wherein the organic phase of the supported copper of gained after extraction enter back extraction process, this back extraction process is preferably carried out in back extraction pond, raffinate preferably enters raffinate storage pool, scrapes off therein after oil slick and returns in leaching tanks and recycle; Use strippant to strip to the organic phase of described supported copper, the volume ratio that O/A(is organic phase and water is compared in reextraction) be 1:1, stratification after stripping, wherein after stripping, the rich copper solution of gained preferably enters electrolytic cell, carry out electrolytic process, the extraction process that poor copper organic phase turns back in mixer-settler recycles; Described rich copper solution obtains metallic copper after electrolysis, and remaining poor copper electrolyte is added the reextraction process turning back in back extraction pond as back washing agent after sulfuric acid and recycled.
The method of surperficial zerovalent copper in above-mentioned recovery gantry hanger, wherein, described extractant is copper extractant RE609, the RE609 that preferred volume mark is 15%; Strippant is sulfuric acid, the sulfuric acid that preferred concentration is 180g/L.
The method of surperficial zerovalent copper in above-mentioned recovery gantry hanger, wherein, described electrolysis, its condition is current density 200 ~ 250A/m2, voltage is 2 ~ 2.2V, and positive plate is lead alloy plate, and minus plate is corrosion resistant plate.
Provided by the inventionly have the following advantages for the equipment and the recovery method thereof that reclaim the surperficial zerovalent copper of gantry hanger:
(1) the present invention adopts the copper on microbial process leaching hanger surface, gantry, and leaching liquid can obtain high-purity copper through get-electrolysis process of extracting-back extraction, and solution circulation utilization of the present invention, produces without waste water and gas, and environment and human body are safe from harm.
(2) the present invention adopts annular chain-type driving and leaching tanks, gantry hanger is fixed on the suspension holdfast of driving by chain and knot that can be undone by a pull, not only save the floor space of equipment, ensure that gantry hanger fully contacts with leachate, leaching process stability and high efficiency, and aeration has formed stirring system bottom leaching tanks, energy consumption is low, can bring larger benefit.
Brief description of the drawings
Fig. 1 is existing gantry hanger schematic diagram.
Fig. 2 is of the present invention for reclaiming the equipment schematic diagram of the surperficial zerovalent copper of gantry hanger.
Fig. 3 is the method flow diagram of surperficial zerovalent copper in the hanger of recovery of the present invention gantry.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described.
As shown in Figure 2, provided by the invention for reclaiming the equipment of the surperficial zerovalent copper of gantry hanger, it comprises the annular chain type travelling facility that can fix gantry hanger 10.
This annular chain type travelling facility comprises leaching tanks 11, ring chain track 3, suspension holdfast 4, hangs chain 7, pillar 2 and body frame 1.
Leaching tanks 11 are cannelure, and the outer wall 5 in its outside and the inwall 6 of inner side are concentric cylindrical, and the cross section of these leaching tanks 11 is " recessed " shape, and gantry hanger 10 is suspended between the outer wall 5 and inwall 6 of leaching tanks 11. Distance between outer wall 5 and the inwall 6 of leaching tanks 11 is greater than the distance between the dual-side of gantry hanger 10.
Ring chain track 3 becomes concentrically ringed chain track 31 to form by two, and it is arranged on the top of leaching tanks 11, and these two chain tracks 31 are suitable with outer wall 5 and the inwall 6 of leaching tanks 11 respectively;
Article two, between chain track 31, be provided with some shaft-like suspension holdfasts 4 along concentrically ringed radial direction; Each suspension holdfast 4 belows are respectively equipped with two suspension chains 7, and the end of every suspension chain 7 is respectively equipped with a knot that can be undone by a pull 8, and knot that can be undone by a pull 8 can be connected and fixed with the side top of gantry hanger 10; The top of two sides of gantry hanger 10 is respectively equipped with a sealing ring 9, and sealing ring 9 can be connected and fixed with the knot that can be undone by a pull 8 of the end that hangs chain 7. Hang chain 7 and formed stable triangle battle array with gantry hanger 10, make stable being fixed on suspension holdfast 4 of gantry hanger 10, prevent that gantry hanger 10 is dilapidated.
This annular chain type travelling facility can be connected with drive unit, drives each suspension holdfast 4 to drive gantry hanger 10 under it to continue pitch of the laps operation with ring chain track 3 with the speed of 3 ~ 4 circle/min.
The inner side of ring chain track 3 is outwards provided with some shaft-like body frames 1 by concentric circles circle centre position, and the end of each body frame 1 is fixing with ring chain track 3 respectively, is respectively equipped with a pillar 2 on each body frame 1.
Provided by the invention for reclaiming the equipment of the surperficial zerovalent copper of gantry hanger, also comprise the liquid storage tank that can filter, can be used in the mixer-settler and the raffinate storage pool that can be used in the raffinate storage after extraction of extraction, can be used in the back extraction pond of reextraction, and can be used in the electrolytic cell of electrolysis. All not shown in above figure.
As shown in Figure 3, the present invention also provides and has used the said equipment to reclaim the method for surperficial zerovalent copper in the hanger 10 of gantry, and the method is to leach gantry hanger 10 surface coppers by microorganism.
The method comprises:
Step 1(S1), choose Thiobacillus ferrooxidans, tame cultivation by 9K culture medium; Thiobacillus ferrooxidans is that inorganicization of acidophilia can, from oxygen bacterium, leach effect to the recovery of copper fine. Utilize the domestication of 9K culture medium to cultivate the activity that can improve microorganism, strengthen the adaptability of microorganism, ensure biomass, improve the leaching efficiency of microorganism. In 9K culture medium, comprise the FeSO of 10 ~ 40g/L4·7H2(the NH of O, 0.75 ~ 3g/L4)2SO4, 0.125 ~ 0.5g/L K2HPO4, the KCl of 0.025 ~ 0.1g/L, the MgSO of 0.125 ~ 0.5g/L4·7H2Ca (the NO of O, 0.0025 ~ 0.01g/L3)2, and deionized water.
The process that this domestication is cultivated comprises: with 10% inoculum concentration, bacterial classification is seeded to 9K culture medium, shaken cultivation under room temperature condition, 200r/min; At it during in exponential phase, add the accessory of gantry hanger 10, measure the pH value of leachate, after pH starts to decline and tends to stablize, the leachate that again measures gained with 10% inoculation is seeded to new 9K culture medium and adds the accessory of two gantry hangers 10; Repeat the number of fitting parts that this process also improves gantry hanger 10 successively one by one, finally obtain required domesticated strain, preserve stand-by.
Step 2(S2), gantry hanger 10 is fixed on chain-type travelling facility, prepare the 9K culture medium same with step 1 and inject leaching tanks 11, gantry hanger 10 is immersed in the 9K culture medium of leaching tanks 11.
Step 3(S3), the initial pH value of the 9K culture medium in leaching tanks 11 is adjusted into 1.8 ~ 2.5, cultivates the bacterial classification of gained by inoculum concentration 10% to 9K inoculation of medium step 1 domestication in leaching tanks 11 with sulfuric acid, under 26 ~ 30 DEG C of conditions of normal temperature, continue aeration to leaching tanks 11 bottoms and cause stirring, and hanger 10 surface coppers in gantry are leached, hanger 10 surface attachment copper in gantry can oxidizedly be dissolved as bivalent cupric ion and form copper-bath. Extraction time is 4 ~ 6 days; In leaching process, annular chain type travelling facility band driven portal hanger 10 is with the speed continuous service of 3 ~ 4 circle/min.
Step 4(S4), after leaching process completes, collect leachate and filter, obtain filtrate (supernatant). Preferably adopt self priming pump that leachate is moved into liquid storage tank, filter.
Step 5(S5), gained filtrate is extracted to (S5.1), reextraction (S5.2) and electrolysis (S5.3) successively, realize the concentration and separation of metallic copper, finally obtain high-purity copper, its purity can be up to 99%.
Filtrate preferably enters in mixer-settler and extracts, while using extractant to extract, extraction phase is 1:1 than O/A, stratification after extraction, make wherein the organic phase of the supported copper of gained after extraction enter reextraction process, raffinate preferably enters raffinate storage pool, scrapes off therein after oil slick and turns back in leaching tanks 11 and recycle.
The organic phase of supported copper preferably enters back extraction pond, use therein strippant to strip, it is 1:1 that O/A is compared in reextraction, stratification after stripping, make wherein the rich copper solution of gained after stripping enter electrolytic process, poor copper organic phase preferably turns back to the extraction section of carrying out in mixer-settler and recycles.
Above extractant is copper extractant RE609, commercially available, the RE609 that preferred volume mark is 15%. Strippant is sulfuric acid, commercially available, the sulfuric acid that preferred concentration is 180g/L.
Rich copper solution obtains metallic copper after electrolysis, and its purity can be up to 99%. Electrolytic condition is current density 200 ~ 250A/m2, voltage is 2 ~ 2.2V, and positive plate is lead alloy plate, and minus plate is corrosion resistant plate. Remaining poor copper electrolyte is added and is turned back to reextraction process as back washing agent after sulfuric acid and recycle.
Above process implementation non-wastewater discharge of the present invention, the target of saving resource.
Below in conjunction with embodiment, the present invention is further elaborated.
Embodiment 1.
Preparation 9K culture medium, its component content: FeSO4·7H2O is 40g/L, (NH4)2SO4For 3g/L, K2HPO4For 0.5g/L, KCl are 0.1g/L, MgSO4·7H2O is 0.5g/L, Ca (NO3)2For 0.01g/L, all the other are deionized water. Be inoculated in leaching tanks 11 by inoculum concentration 10% cultivating the Thiobacillus ferrooxidans of having tamed, form leaching liquid with culture medium. Adjusting the initial pH of leaching liquid with sulfuric acid is 2.50, and mixing speed 200r/min leaches 4d at 28 DEG C. Calculating after testing copper total amount in leachate is 140g.
Embodiment 2.
The 9K culture medium of preparation 1/2, the each component content in embodiment 1 reduces by half, wherein: FeSO4·7H2O is 20g/L, (NH4)2SO4For 1.5g/L, K2HPO4For 0.25g/L, KCl are 0.05g/L, MgSO4·7H2O is 0.25g/L, Ca (NO3)2For 0.005g/L, all the other are deionized water. Be inoculated in leaching tanks 11 by inoculum concentration 10% cultivating the Thiobacillus ferrooxidans of having tamed, form leaching liquid with culture medium. Adjusting the initial pH of leaching liquid with sulfuric acid is 2.0, mixing speed 200r/min, at normal temperatures 26 DEG C of leaching 5d. Calculating after testing copper content in leachate is 100g.
Embodiment 3.
Preparation 1/4 9K culture medium, in embodiment 1, each component content is former culture medium 1/4, wherein: FeSO4·7H2O is 10g/L, (NH4)2SO4For 0.75g/L, K2HPO4For 0.125g/L, KCl are 0.025g/L, MgSO4·7H2O is 0.125g/L, Ca (NO3)2For 0.0025g/L, all the other are deionized water. Be inoculated in leaching tanks 11 by inoculum concentration 10% cultivating the Thiobacillus ferrooxidans of having tamed, form leaching liquid with culture medium. Adjusting the initial pH of leaching liquid with sulfuric acid is 1.8, and mixing speed 200r/min leaches 6d under 34 DEG C of conditions. Calculating after testing copper content in leachate is 120g.
Provided by the invention for reclaiming equipment and the recovery method thereof of gantry hanger 10 surperficial zerovalent coppers, be to adopt chain-type driving to utilize the copper on microbial process leaching hanger 10 surfaces, gantry. Gantry hanger 10 is fixed on the suspension holdfast 4 of chain-type driving in leaching tanks 11, the copper on recycling microorganism leaching hanger 10 surfaces, gantry, reaction a period of time, the oxidized copper sulphate that is dissolved as of gantry hanger 10 surface coppers, after filtration, filtrate obtains high-purity copper after get-electrolysis process of extracting-back extraction, and the raffinate after extraction returns to leaching section again and recycles. In the removal process of copper, the solution of the inventive method all recycles, produce without waste water and waste gas, final products are high-purity copper, and the present invention's equipment chain-type driving used is annular, gantry hanger 10 can be fixed on the suspension holdfast 4 of driving with knot that can be undone by a pull 8 by hanging chain 7, this stable equipment operation, saves and takes up an area, and forms stirring system when leaching tanks 11 bottom aeration, energy consumption is low, and operation is efficient.
Although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention. Read after foregoing those skilled in the art, for multiple amendment of the present invention and substitute will be all apparent. Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. for reclaiming an equipment for the surperficial zerovalent copper of gantry hanger, it is characterized in that the annular chain type travelling facility that described equipment comprises fixing gantry hanger (10);
Described annular chain type travelling facility comprises leaching tanks (11), ring chain track (3), suspension holdfast (4), hangs chain (7), pillar (2) and body frame (1);
Described leaching tanks (11) are cannelure, the outer wall (5) in its outside and the inwall (6) of inner side are concentric cylindrical, the cross section of these leaching tanks (11) is " recessed " shape, and described gantry hanger (10) is suspended between the described outer wall (5) and described inwall (6) of leaching tanks (11); Distance between described outer wall (5) and the described inwall (6) of leaching tanks (11) is greater than the distance between the dual-side of gantry hanger (10);
Described ring chain track (3) becomes concentrically ringed chain track (31) to form by two, and it is arranged on the top of leaching tanks (11), and the radius of these two chain tracks (31) is suitable with outer wall (5) and the inwall (6) of leaching tanks respectively;
Between described two chain tracks (31), be provided with some shaft-like suspension holdfasts (4) along concentrically ringed radial direction; Each suspension holdfast (4) below is respectively equipped with two suspension chains (7), and the end of every suspension chain (7) is respectively equipped with a knot that can be undone by a pull (8), and described knot that can be undone by a pull (8) is connected and fixed with the side top of gantry hanger (10);
The inner side of described ring chain track (3) is outwards provided with some shaft-like body frames (1) by concentrically ringed circle centre position, and the end of each body frame (1) is fixing with ring chain track (3) respectively, is respectively equipped with a pillar (2) on each body frame (1).
2. as claimed in claim 1 for reclaiming the equipment of the surperficial zerovalent copper of gantry hanger, it is characterized in that, the top of two sides of described gantry hanger (10) is respectively equipped with a sealing ring (9), and described sealing ring (9) is connected and fixed with the described knot that can be undone by a pull (8) of the end of described suspension chain (7).
3. as claimed in claim 2ly it is characterized in that for reclaiming the equipment of the surperficial zerovalent copper of gantry hanger, described annular chain type travelling facility is connected with drive unit, drives the speed operation of each suspension holdfast (4) with 3 ~ 4 circle/min.
4. the equipment of use as described in any one in claim 1 ~ 3 reclaims a method for surperficial zerovalent copper in the hanger of gantry, it is characterized in that, the method is the surface copper that leaches gantry hanger (10) by microorganism, and described method comprises:
Step 1, chooses bacterial classification and tames cultivation;
Step 2, is fixed on gantry hanger (10) on described annular chain type travelling facility, and preparation 9K culture medium also injects described leaching tanks (11), and described gantry hanger (10) is immersed in the 9K culture medium of described leaching tanks (11);
Step 3, the initial pH value of the 9K culture medium in leaching tanks (11) is adjusted into 1.8 ~ 2.5 with sulfuric acid, cultivate the bacterial classification of gained to 9K inoculation of medium step 1 domestication in leaching tanks (11) by inoculum concentration 10%, under 26 ~ 30 DEG C of conditions of normal temperature, continue aeration to described leaching tanks (11) bottom and the surface copper of gantry hanger (10) is leached simultaneously, extraction time is 4 ~ 6 days; In leaching process gantry hanger (10) under described annular chain type travelling facility drives with the speed continuous service of 3 ~ 4 circle/min;
Step 4, after leaching process completes, collects leachate and filters, and obtains filtrate;
Step 5, by gained filtrate extract successively, reextraction and electrolysis, obtain metallic copper.
5. the method for surperficial zerovalent copper in the hanger of recovery as claimed in claim 4 gantry, is characterized in that, the bacterial classification described in step 1 is Thiobacillus ferrooxidans, tames cultivation by 9K culture medium.
6. the method for surperficial zerovalent copper in the hanger of recovery as claimed in claim 5 gantry, is characterized in that, described domestication is cultivated, and its process comprises: with 10% inoculum concentration, described bacterial classification is seeded to 9K culture medium, shaken cultivation under room temperature condition, 200r/min; At it during in exponential phase, add the accessory of gantry hanger (10), measure the pH value of leachate, after pH starts to decline and tends to stablize, the leachate that again measures gained with 10% inoculation is seeded to new 9K culture medium and adds the accessory of two gantry hangers (10); Repeat this process and improve one by one successively the number of fitting parts of gantry hanger (10), finally obtaining required domesticated strain, preserving stand-by.
7. the method for surperficial zerovalent copper in the hanger of recovery as claimed in claim 6 gantry, is characterized in that the FeSO that comprises 10 ~ 40g/L in described 9K culture medium4·7H2(the NH of O, 0.75 ~ 3g/L4)2SO4, 0.125 ~ 0.5g/L K2HPO4, the KCl of 0.025 ~ 0.1g/L, the MgSO of 0.125 ~ 0.5g/L4·7H2Ca (the NO of O, 0.0025 ~ 0.01g/L3)2, and deionized water.
8. the method for surperficial zerovalent copper in the hanger of recovery as claimed in claim 4 gantry, it is characterized in that, use extractant to extract to the filtrate described in step 5, its extraction phase is 1:1 than O/A, after extraction, the organic phase of supported copper of gained enters reextraction process, and raffinate recycles scraping off in returning to leaching tanks (11) after oil slick;
Use strippant to strip to the organic phase of described supported copper, stripping and comparing O/A is 1:1, and after stripping, the rich copper solution of gained enters electrolytic process, and poor copper organic phase turns back to extraction process and recycles;
Described rich copper solution obtains metallic copper after electrolysis, and remaining poor copper electrolyte is added and turned back to reextraction process as back washing agent after sulfuric acid and recycle.
9. the method for surperficial zerovalent copper in the hanger of recovery as claimed in claim 8 gantry, is characterized in that, described extractant is copper extractant RE609; Described strippant is sulfuric acid.
10. the method for surperficial zerovalent copper in the hanger of recovery as claimed in claim 8 gantry, is characterized in that, described electrolysis, and its condition is current density 200 ~ 250A/m2, voltage is 2 ~ 2.2V, and positive plate is lead alloy plate, and minus plate is corrosion resistant plate.
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|---|---|---|---|
| CN201410467450.1A CN104232903B (en) | 2014-09-15 | 2014-09-15 | A kind of for reclaiming equipment and the recovery method thereof of the surperficial zerovalent copper of gantry hanger |
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| CN201410467450.1A CN104232903B (en) | 2014-09-15 | 2014-09-15 | A kind of for reclaiming equipment and the recovery method thereof of the surperficial zerovalent copper of gantry hanger |
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| CN104232903A CN104232903A (en) | 2014-12-24 |
| CN104232903B true CN104232903B (en) | 2016-05-18 |
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| CN105506281B (en) * | 2015-12-11 | 2017-09-19 | 上海第二工业大学 | A kind of method that utilization NCNTs modifications carbon cloth electrode improves copper efficiency in Microorganism Leaching printed substrate |
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| CN101935759A (en) * | 2009-07-03 | 2011-01-05 | 惠州市雄越保环科技有限公司 | Method for recycling and treating waste circuit board |
| CN101962712A (en) * | 2010-10-15 | 2011-02-02 | 华南理工大学 | Method for leaching valuable metals in waste circuit board by acidophilic bacteria mixed culture |
| CN201880729U (en) * | 2010-12-14 | 2011-06-29 | 惠州市雄越保环科技有限公司 | Recovery processing device of waste printed circuit board |
| CN202519343U (en) * | 2012-03-02 | 2012-11-07 | 常州纺织服装职业技术学院 | System for recovering copper from waste circuit board |
| CN102703687B (en) * | 2012-06-15 | 2014-02-26 | 东华大学 | Temperature controllable device for selectively leaching minerals by bacteria |
| BR102012032158A2 (en) * | 2012-12-17 | 2014-09-09 | Ct De Tecnologia Mineral Cetem | BIOLIXIVIATION OF PRIMARY ORES, FLOTATION WASTE AND INTEMPERIZED ORE WITH BIOLOGICAL SULFURIC ACID PRODUCTION FROM ELEMENTARY SULFUR AND / OR LYRICS |
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